US11360583B2 - Electromagnetic fountain pen - Google Patents

Electromagnetic fountain pen Download PDF

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Publication number
US11360583B2
US11360583B2 US17/277,650 US201817277650A US11360583B2 US 11360583 B2 US11360583 B2 US 11360583B2 US 201817277650 A US201817277650 A US 201817277650A US 11360583 B2 US11360583 B2 US 11360583B2
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United States
Prior art keywords
iron core
pen
electromagnetic
core
holder
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US17/277,650
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US20210349557A1 (en
Inventor
Yuanzhi Li
Liming DENG
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Hanvon Ugee Technology Co Ltd
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Hanvon Ugee Technology Co Ltd
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Assigned to HANVON UGEE TECHNOLOGY CO., LTD. reassignment HANVON UGEE TECHNOLOGY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENG, Liming, LI, YUANZHI
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/22—Pens with writing-points other than nibs or balls with electrically or magnetically activated writing-points
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/08—Combinations of writing implements with other articles with measuring, computing or indicating devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the present disclosure relates to the field of information input devices, and more particularly, to an electromagnetic fountain pen.
  • Electromagnetic touch control is increasingly pursued by people because of being capable of perfectly presenting original handwriting input.
  • Main devices for electromagnetic touch control include an antenna board, a control board, and an electromagnetic pen.
  • the electromagnetic pen can not only be operated by point control, but also use a pressure-sensitive characteristic thereof to paint and practice writing.
  • the electromagnetic pen transmits an electromagnetic wave based on an internal oscillation circuit thereof and the antenna board on a device applying an electromagnetic touch control technology to position the electromagnetic pen.
  • the electromagnetic pen is generally composed of an inductor and a capacitor, wherein the inductor is composed of an iron core and a coil, and a frequency of the electromagnetic pen may be changed by regulating an inductance or capacitance value.
  • an electromagnetic input technology has been widely used in a tablet, a mobile phone, an electronic paper book, a handwriting board, an electronic whiteboard, and other electronic devices
  • a common electromagnetic pen can only be operated on a corresponding electromagnetic device, and cannot be used for writing on paper. Therefore, an electromagnetic fountain pen with both electromagnetic writing and ink writing functions has appeared in the market.
  • the electromagnetic fountain pen is mostly implemented by a variable capacitance technology, but the variable capacitance technology is limited by an accuracy and a price of a variable capacitor, such that it is difficult to popularize the electromagnetic fountain pen in performance, price, and other aspects.
  • the electromagnetic fountain pen is composed of many parts, each part has its own manufacturing error, and each part is made of different materials. Therefore, a problem of size inconsistency often occurs during assembly and production, which leads to a condition that an actual size of the electromagnetic pen in delivery is smaller than or larger than a standard size, thereby being not conducive to mass production.
  • the present disclosure aims to provide an electromagnetic fountain pen with a low price and a good size consistency.
  • an electromagnetic fountain pen includes a pen core, a housing, and a pen body located in the housing, wherein the housing includes a front housing and a rear housing, the pen body includes a first iron core and an iron core holder, the iron core holder is provided with a pen core clamp link, a second iron core, and a third iron core, coils are wound outside the first iron core and the second iron core, the first iron core is close to a pen tip of the pen core, the pen core is configured to pass through a center of the first iron core, and then is clamped by one end of the pen core clamp link, and the other end of the pen core clamp link is configured to pass through a center of the second iron core, and then drive the third iron core to move; and a PCBA circuit board is disposed in the rear housing, and an elastic structure is disposed between the PCBA circuit board and the iron core holder.
  • the pen body further comprises a pen core rod, and the pen core is configured to pass through the center of the first iron core and a center of the pen core rod in sequence, and then is clamped by one end of the pen core clamp link.
  • a groove is formed on the iron core holder, and the groove is matched with the second iron core.
  • the second iron core is located inside the iron core holder.
  • a screw post is disposed behind the iron core holder, a screw hole is disposed in the PCBA circuit board, and the screw post is fixed in the screw hole by a screw.
  • the iron core holder includes a front portion of the iron core holder and a tail portion of the iron core holder, and the tail portion of the iron core holder is combined with the front portion of the iron core holder in a rotating manner.
  • a step is disposed on the pen core clamp link.
  • a PCBA peripheral fixing clamping position is disposed on the PCBA circuit board.
  • the elastic structure adopts a silicone ring.
  • an outer diameter of the second iron core is smaller than that of the third iron core.
  • the pen body includes the iron core holder and the first iron core with the wound coil
  • the iron core holder is provided with the pen core clamp link, the third iron core, and the second iron core with the wound coil, a distance between the second iron core and the third iron core is changed by movement of the pen core cooperated with the pen core clamp link so as to change inductance of the passive electromagnetic fountain pen, and then the frequency of the fountain pen is changed, and a variable inductance technology is used to replace a variable capacitance technology, such that a price is lower, and a performance is better
  • the elastic structure is additionally disposed between the iron core holder of the front housing and the PCBA circuit board of the rear housing, an assembly error is eliminated by an elastic margin of the elastic structure during assembly of the front and rear housings with the pen body, such that an actual size of the electromagnetic fountain pen in delivery is equal to a standard size, thereby being conductive to mass production; and meanwhile, the elastic structure may also play a role of buffering, thereby reducing a probability that
  • FIG. 1 is a schematic structural diagram of an electromagnetic fountain pen of the present disclosure
  • FIG. 2 is a sectional view of the electromagnetic fountain pen of the present disclosure
  • FIG. 3 is an exploded view of a structure of an embodiment of the electromagnetic fountain pen of the present disclosure
  • FIG. 4 is an exploded view of a structure of another embodiment of the electromagnetic fountain pen of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a PCBA circuit board
  • FIG. 6 is a curve graph showing a relationship between a distance between two iron cores and an inductance value of a coil.
  • an electromagnetic fountain pen includes a pen core 1 , a housing, and a pen body located in the housing.
  • the housing includes a front housing (not shown) and a rear housing (not shown), the pen body includes a first iron core 2 and an iron core holder, the iron core holder is provided with a pen core clamp link 3 , a second iron core 4 , and a third iron core 5 , coils are wound outside the first iron core 2 and the second iron core 4 , the first iron core 2 is close to a pen tip of the pen core 1 , the pen core 1 passes through a center of the first iron core 2 , and then is clamped by one end of the pen core clamp link 3 , and the other end of the pen core clamp link 3 passes through a center of the second iron core 4 , and then drives the third iron core to move.
  • a PCBA circuit board 7 is disposed in the rear housing, and an elastic structure 8 is disposed between the PCBA circuit board 7 and the iron core holder.
  • a three-iron-core structure is used to change inductance, wherein the first iron core 2 , which is an iron core with a wound coil, is close to the pen tip of the pen core, and is responsible for receiving and transmitting energy.
  • the second iron core 4 is an iron core with a wound coil
  • the third iron core 5 is an iron core without a wound coil.
  • a through hole in the center of the second iron core 4 is larger than a through hole in a center of the third iron core 5 .
  • the two iron cores are disposed behind the pen core, and the second iron core 4 is closer to the pen tip of the pen core than the third iron core 5 .
  • This structure may provide an enough space behind the third iron core 5 to design an internal elastic component, and other structures, such that the pen tip has an excellent force feedback performance.
  • the pen core clamp link 3 has pen core clamping and linking functions. As shown in FIG. 3 or FIG. 4 , one end of the pen core clamp link 3 may clamp the pen core 1 , and the other end of the pen core clamp link 3 has the linking function, and is an elongated plastic rod. The pen core clamp link 3 may be loaded from a direction of the pen tip of the iron core holder.
  • the pen core 1 passes through the center of the first iron core 2 , and then is clamped by one end of the pen core clamp link 3 , and the other end of the pen core clamp link 3 passes through the center of the second iron core 4 , and then pushes the third iron core 5 to move, such that a distance between the second iron core 4 and the third iron core 5 is changed, resulting in a change of an inductance value.
  • the PCBA circuit board 7 has a fixed capacitance value, two coil-wound inductors of the first iron core 2 and the second iron core 4 are connected in parallel with a capacitor on the PCBA circuit board 7 .
  • An antenna board emits a frequency to charge the pen initially, when the antenna board stops emitting, the pen may be changed from receiving energy to emitting energy, and the coil-wound inductor on the pen is changed, and is connected in parallel with the fixed capacitor on the PCBA circuit board 7 , which may change a frequency emitted by the pen, such that the antenna board is capable of obtaining different frequencies of the pen, and different changes of a pressure value of the pen are generated.
  • the first iron core 2 , the second iron core 4 , and the third iron core 5 of the present disclosure may all be a hollow structure.
  • the pen tip of the pen core 1 is located on the left, and the tail end is located on the right.
  • the iron core holder includes a front portion 61 of the iron core holder and a bottom portion 62 of the iron core holder matched with each other, the second iron core 4 may be fixed on the front portion 61 of the iron core holder from a direction of the pen tail, while the third iron core 5 is located behind the second iron core 4 , is installed inside the iron core holder, and may move in the iron core holder.
  • the iron core clamp link 3 passes through the center of the second iron core 4 , and then pushes the third iron core 5 to move in the iron core holder.
  • the elastic structure 8 has a certain elastic margin, which is used for eliminating and absorbing an error in an axial direction from the pen tip to the pen tail of the electromagnetic fountain pen, such that an actual size of the electromagnetic pen in delivery is equal to a standard size.
  • the elastic structure 8 may also play a role of buffering, which prevents the PCBA circuit board 7 , the iron core holder, and other parts from being damaged due to mechanical shock or wear, thereby prolonging a service life.
  • the elastic structure 8 may be implemented by a rubber ring (such as a silicone ring), an elastic metal sheet, a thin film sheet, and other elastic structures.
  • the pen core 1 of the present disclosure may be implemented by a pen core of an existing fountain pen.
  • the pen body further includes a pen core rod 9 , and the pen core 1 passes through the center of the first iron core 2 and a center of the pen core rod 9 in sequence, and then is clamped by one end of the pen core clamp link 3 .
  • the pen core rod 9 is located between the first iron core 2 and the pen core clamp link 3 , and may protect the pen core 1 .
  • the pen core clamp link 3 is loaded from a direction of the pen tip of the iron core holder during assembling first. After the pen core clamp link 3 is loaded, the pen core rod 9 is combined with the front portion 61 of the iron core holder from the direction of the pen tip.
  • a groove 611 is formed on the iron core holder, and the groove 611 is matched with the second iron core 4 .
  • the second iron core 4 may be installed and fixed to the front portion of the iron core holder by the groove 611 (which means that the second iron core is loaded in the front portion 61 of the iron core holder from a side face).
  • the second iron core 4 is located inside the iron core holder. Specifically, the second iron core 4 may be completely installed and fixed inside the iron core holder.
  • a screw post 10 is disposed behind the iron core holder, a screw hole 11 is disposed in the PCBA circuit board 7 , and the screw post 10 is fixed in the screw hole 11 by a screw 12 .
  • the screw hole 11 may be an elliptical hole
  • the screw post 10 may be a cylinder, such that the PCBA circuit board 7 is also capable of moving towards the pen tip or the pen tail for a small distance after the screw 12 is tightened (a characteristic of the elliptical hole), thereby facilitating position regulation during installation and reducing installation errors.
  • the iron core holder includes a front portion 61 of the iron core holder and a tail portion 62 of the iron core holder, and the tail portion 62 of the iron core holder is combined with the front portion 61 of the iron core holder in a rotating manner.
  • a step 31 is disposed on the pen core clamp link 3 .
  • one end of the pen core clamp link clamps the pen core 1
  • the other end of the pen core clamp link is an elongated plastic rod with a step difference.
  • the pen core clamp link 3 has a linking function
  • a tail end of the link is provided with one step 31 , which is capable of passing through the center of the second iron core 4
  • the third iron core 5 is pushed to move by the step 31 .
  • a PCBA peripheral fixing clamping position 71 is disposed on the PCBA circuit board 7 .
  • the rear housing of the housing may be pushed to the PCBA peripheral fixing clamping position 71 to be fixed, and pushed towards the pen tip. Since the pen body is placed in the front and rear housings, when the front and rear housings are combined, the rear housing may press the whole pen body towards a direction of the front housing (i.e., the direction of the pen tip) through the PCBA peripheral fixing clamping position 71 , such that the front housing and the rear housing can be tightly attached or connected.
  • the elastic structure adopts a silicone ring.
  • an outer diameter of the second iron core is smaller than that of the third iron core.
  • the outer diameter of the third iron core without the wound coil is larger than that of the second iron core with the wound coil.
  • the outer diameter of the third iron core is reduced close to one end of the second iron core, such that an overall appearance of the pen may not be abrupt due to the third iron core without the wound coil in the interior, thereby having a better consistency in overall appearance.
  • a first through hole is formed in the center of the second iron core
  • a second through hole is formed in a center of the third iron core
  • a diameter of the first through hole is larger than that of the second through hole
  • the diameter of the first through hole of the second iron core is larger than that of the second through hole of the third iron core, such that the pen core is capable of pushing the third iron core by the step at the tail end of the pen core clamp link.
  • the working principle of the electromagnetic fountain pen of the present disclosure is as follows: when the pen tip of the pen core is stressed during writing, the pen core passes through the center of the first iron core to be clamped by one end of the pen core clamp link, the other end of the pen core clamp link passes through the center of the second iron core, and the third iron core is pushed to move by the step, such that different distances are formed between the second iron core and the third iron core, thereby changing an inductance value on the coil of the second iron core.
  • the changed inductor of the second iron core and the inductor of the first iron core are connected in parallel with the fixed capacitor on the PCBA circuit board, such that a frequency emitted by the pen is changed, and different changes of a pressure value of the pen are generated.
  • the elastic structure is additionally disposed between the iron core holder and the PCBA circuit board, such that an assembly error is eliminated by an elastic margin of the elastic structure during assembling the front and rear housings with the pen body, such that an actual size of the electromagnetic pen in delivery is equal to a standard size, thereby being conductive to batch production, reducing a probability that the parts are damaged due to mechanical shock or wear, and prolonging a service life of the electromagnetic pen.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)
  • Pens And Brushes (AREA)
US17/277,650 2018-09-19 2018-10-18 Electromagnetic fountain pen Active US11360583B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CM201811097465.8 2018-09-19
CN201811097465.8A CN109177585A (zh) 2018-09-19 2018-09-19 一种电磁出水笔
PCT/CN2018/110835 WO2020056832A1 (zh) 2018-09-19 2018-10-18 一种电磁出水笔

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US20210349557A1 US20210349557A1 (en) 2021-11-11
US11360583B2 true US11360583B2 (en) 2022-06-14

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US (1) US11360583B2 (de)
EP (1) EP3855291B1 (de)
JP (1) JP7174842B2 (de)
CN (1) CN109177585A (de)
WO (1) WO2020056832A1 (de)

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US11855463B2 (en) * 2020-12-04 2023-12-26 Spark Connected LLC Wireless power transmission to a mobile device

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